Improvement in stump-extractors



UNITED STATES PATENT OFFICE.

MICHAEL J. MARTIN, OF BELLEVILLE, ILLINOIS.

, IMPROVEMENT IN s'ru MP-ExTRAoTous.

To all whom it may concern:

Be it known that I, MIoHAEL J. MARTIN, or Belleville, in the county of St. Clair and State of Illinois, have invented 'a new and useful Improvement in Machineryy for Extracting Stumps and Lifting Heavy Weights, which I call a Stump-Puller, and I do hereby declare that the following is a full, clear, and exact description of the same, reference beingl able the operator to work around the stump or weight to be lifted, and of a screw with grappling hooks that are attached to the stump, and with a nut supported by a washer on the frame and operated -by powerlevers that are bent over the frame and down toward the ground.

To enable others skilled in the arts appertaining to my invention to make and use the same, I will proceed to describe its construction and operation, with reference to the drawings.

Figure lis a perspective view of my said improved machine; and Fig. 2 is a plan of a part of the same, in which the levers are shown attached to the screwnut and braced together with liron rods. y

The frame is composed of two end trestles, H H, made with .a sill, Z, two posts, m m, and

Specilication forming part of Letters Patent No. 36,227, da'. ed August 19, 1F62.

two diagonal braces, n n, anda cap, o, upon which rest the tie beams or cords s s, which carry the four braces t, that are footed into the ends of the tie-beams and are converged together at the center to carry the washer b. The bolts u u connect the tie-beams.v atV their ends. The sills Z are fnrnishedwith hooks q, to facilitate the shifting of the machine. The end trestles are braced bythe diagonal tie-rods p, that may be hooked up on the hooks r out of the way of the operator when the power is not being applied to the machine.

The vworking parts of the machine are composed of the screw f, carrying the grapplinghooks h h at the lower end and the Vnut a on the upper end, that rests upon the washer b and is furnished with a mortised flange for the reception of the power -levers c. The hooks g, that carry the grappling-hooks h, are

strengthened and sustained by the'loop t'. The

screw-nut a has holes e, by which oil may be carried to the bearing-surface of the washer. The power-levers c are bent over the frame, so that teams may beV conveniently attached, and they are braced by the tie-rods d. As these levers are carried around the circle, thescrew is run'up and the stump or weight is lifted.

I claim as myinvention and desire tosecure by Letters Patent-f The combination of the frame with shifting braces r, the screw with grappling-hooks l1,

Witnesses: l

G. W. CARTER, OsoAR F. GRIEEEN. 

